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In a plastics molding operation, material remaining in the transfer chamber after the mold has been filled.
(science and technology)
Material rejected for being below standard grade.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Any building material rejected as being below standard quality.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
cull, brack, wrack
A piece of lumber or brick of a quality below the lowest accepted grade or below specifications.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.